1. I'm not sure what previous threads you're talking about regarding Norton, but I'm running it on my M 1300 and all is well.
2. The 7200 rpm unit should improve boot time, but I'm sure Windows will mask any advantage as you start to install software. The best thing to do is Keep an eye on the soft you install and control what launches at boot. A better option is to use hibernate whenever possible. It i as close to a cold start "instant-on" as we are likely to get.
3. I found I didn't need the docking station, but that's dependent on your usage. I did find I quickly had to buy an external DVD drive, extra power cable (one for the desk, one for the travel bag), third party spare battery (eight hour lifespan) spare portable stands (I bought wooden picture holders for the desk, and use the plastic thing for the road),USB hub, mouse (I hate touchpads), Bluetooth card (the 1300 doesn't have bt built in) and spare pens. I use a great travel portfolio bag from Travel Pro.
I will be switching from the mobile keyboard to the hardtop one because the mobile keyboard keys fall off too easily and never seem to go back on right.
I also purchased some incense and candles so I can worship my Motion. It's improved my productivity THAT much. :D